Effects of carbon nanomaterials and MXene addition on the performance of nitrogen doped MnO2 based supercapacitors

Peçenek, Hilal; Yetiman, Sevda; Dokan, Fatma Kılıç; Önses, M. Serdar; Yılmaz, Erkan; Şahmetlioğlu, Ertuğrul

doi:10.1016/j.ceramint.2021.11.285

Cited by 47 publications

(18 citation statements)

References 84 publications

(53 reference statements)

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“…To date, the design of anode materials is the key to developing PIBs. In consideration of the similar development of anode materials in LIBs, several anode materials have attracted much attention, mainly including carbon-based materials [10], metal oxides [11,12], and alloy-type materials [13,14]. Although potassium-ions intercalated into graphite carbon layers can form a thermodynamically stable intercalation compound, its larger radius (0.138 nm) hinders the rapid intercalation behavior between the carbon layers and shows unsatisfactory specific capacity [15,16].…”

Section: Introductionmentioning

confidence: 99%

Insight into a Nitrogen-Doping Mechanism in a Hard-Carbon-Microsphere Anode Material for the Long-Term Cycling of Potassium-Ion Batteries

Chen

Zhao

et al. 2022

Materials

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To investigate the alternatives to lithium-ion batteries, potassium-ion batteries have attracted considerable interest due to the cost-efficiency of potassium resources and the relatively lower standard redox potential of K+/K. Among various alternative anode materials, hard carbon has the advantages of extensive resources, low cost, and environmental protection. In the present study, we synthesize a nitrogen-doping hard-carbon-microsphere (N-SHC) material as an anode for potassium-ion batteries. N-SHC delivers a high reversible capacity of 248 mAh g−1 and a promoted rate performance (93 mAh g−1 at 2 A g−1). Additionally, the nitrogen-doping N-SHC material also exhibits superior cycling long-term stability, where the N-SHC electrode maintains a high reversible capacity at 200 mAh g−1 with a capacity retention of 81% after 600 cycles. DFT calculations assess the change in K ions’ absorption energy and diffusion barriers at different N-doping effects. Compared with an original hard-carbon material, pyridinic-N and pyrrolic-N defects introduced by N-doping display a positive effect on both K ions’ absorption and diffusion.

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Section: Introductionmentioning

confidence: 99%

Insight into a Nitrogen-Doping Mechanism in a Hard-Carbon-Microsphere Anode Material for the Long-Term Cycling of Potassium-Ion Batteries

Chen

Zhao

et al. 2022

Materials

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“…The energy storage mechanism of the supercapacitor depends on the faradaic reactions and charge accretion [14]. Double-layer capacitance and pseudocapacitor are two important storage principles to determine the capacitance of a supercapacitor.…”

Section: Introductionmentioning

confidence: 99%

Hydrazine Hydrate Induced Three-Dimensional Interconnected Porous Flower-like 3D-NiCo-SDBS-LDH Microspheres for High-Performance Supercapacitor

et al. 2022

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Porous structure and surface defects are important to improve the performance of supercapacitors. In this study, a facile pathway was developed for high-performance supercapacitors, which can produce transition metal hydroxides (LDHs) with abundant porous structure and surface defects. The NiCo-SDBS-LDH was prepared by one-step hydrothermal reaction using sodium dodecylbenzene sulfonate (SDBS) as anionic surfactant. And then, three dimensional (3D) interconnected porous flower-like 3D-NiCo-SDBS-LDH microspheres were designed and synthesized using the gas-phase hydrazine hydrate reduction method. Results showed that the hydrazine hydrate reduction not only introduces a large number of pores into 3D-NiCo-SDBS-LDH microspheres and causes the formation of oxygen vacancies, but it also roughens the surface of the microspheres. All these changes contribute to the enhancement of electrochemical activity of 3D-NiCo-SDBS-LDH; the NiCo-SDBS-LDH electrode after hydrazine hydrate treatment (3D-NiCo-SDBS-LDH) exhibits a higher specific capacitance of 1148 F·g−1 at 1 A·g−1 (about 1.46 times larger than that of NiCo-SDBS-LDH) and excellent long cycle life with 94% retention after 4000 cycles. Moreover, the assembled 3D-NiCo-SDBS-LDH//AC (active carbon) asymmetric supercapacitor (ASC) achieves remarkable energy density of 73.14 W h·kg−1 at 800 W·kg−1 and long-term cycling stability of 95.5% retention for up to 10,000 cycles. The outstanding electrochemical performance can be attributed to the synergy between the rich porous structure and the roughened surface that has been created by the hydrazine hydrate treatment.

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“…Novel hybrid materials with high energy-storage systems are needed for practical utilization SCs. [1][2][3][4][5][6][7][8] Especially in the periods after the discovery of graphene, it has been determined that nanostructured materials exhibit very different electrical, optical, and mechanical properties caused by their porous or layered structure and high surface area compared to bulk structures. [9][10][11][12] Especially, carbon materials confined at the nanoscale such as activated carbon, graphene, graphene oxide, carbon dots, carbon quantum dots, carbon nanotubes, and graphical carbon nitride (g-C 3 N 4 ) are populously employed as electrode materials for the last decade in SCs.…”

Section: Introductionmentioning

confidence: 99%

“…In this regard, supercapacitors (SCs) have received considerable attraction. Novel hybrid materials with high energy‐storage systems are needed for practical utilization SCs 1–8 …”

Section: Introductionmentioning

confidence: 99%

Hybrid electrodes composed of graphitic carbon nitride and zeolitic imidazolate framework‐67 for supercapacitor applications

Yetiman

Dokan

Önses

et al. 2022

Intl J of Energy Research

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Carbon-based materials with porous and layered forms have irreplaceable worth in renewable energy storage applications, especially after the graphene discovery. Among these materials, graphitic carbon nitride (g-C 3 N 4 ) shows great promise by including polymeric layers accentuate owing to its costeffective yet eco-friendly chemistry. Zeolitic imidazolate frameworks (ZIFs) also draw attention to possessing high surface area owing to porous structure. Herein, we present a rational co-synthesis of these materials for the fabrication of high-performance supercapacitors (SCs). G-C 3 N 4 @ZIF-67 hybrid electrode demonstrated a high specific capacitance of 657 F g À1 at the current density of 1 A g À1 . The specific capacitance of pure g-C 3 N 4 and ZIF-67 were 446 and 560 F g À1 at the same current density. Moreover, the capacitances only decay at 6%, 5%, and 10% after 3500 cycles for g-C 3 N 4 , ZIF-67, and g-

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Effects of carbon nanomaterials and MXene addition on the performance of nitrogen doped MnO2 based supercapacitors

Cited by 47 publications

References 84 publications

Insight into a Nitrogen-Doping Mechanism in a Hard-Carbon-Microsphere Anode Material for the Long-Term Cycling of Potassium-Ion Batteries

Insight into a Nitrogen-Doping Mechanism in a Hard-Carbon-Microsphere Anode Material for the Long-Term Cycling of Potassium-Ion Batteries

Hydrazine Hydrate Induced Three-Dimensional Interconnected Porous Flower-like 3D-NiCo-SDBS-LDH Microspheres for High-Performance Supercapacitor

Hybrid electrodes composed of graphitic carbon nitride and zeolitic imidazolate framework‐67 for supercapacitor applications

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